INTRODUCTION 1-1
1.0 INTRODUCTION
The US DRIVES PHOENIX digital AC drive has an
optional isolated serial communication interface that
enables the user to control and setup the drive using a
host computer, such as an IBM compatible PC. The
drive’s serial interface may be configured to support
either the RS-422 or RS-485 interconnect standard. In
addition, schematics shown in this document show a
simple hookup that permits an RS-232 interface (this
hookup does not meet EIA standards, due to noise
immunity levels, but will work with most host
computers). The PHOENIX Modbus USD protocol is
loosely based on the MODBUS RTU Protocol and
features full CRC (Cyclical Redundancy Check)
protection in both directions. The Phoenix drive
defaults to 9600 Baud Rate, No Parity, 8-Bit Data and
2 Stop Bits.
Using an RS-485 serial interconnect, up to 32 drives
can be party-lined to permit the host computer to
setup and query any one of them. With using the
Ethernet Communications Card, any host computer on
a network can communicate to the Phoenix AC Drives.
The PHOENIX AC drive contains an onboard database
of over 282 parameters that define and describe drive
setups and operating conditions. In essence, a user
armed with a printout of the drive’s parameters can
configure and operate the drive with a simple read
and write command to the desired parameter.
For those users wishing to develop their own host
computer drive control software, the following sections
of this manual describe the Modbus USD, Modbus
RTU, and Modbus TCP Protocols that are used.
Содержание DS Series
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